# Posts by haley

Total # Posts: 507

**Algebra 2**

That is 300 degrees so (1/2,square root 3/2). The cosine is (1/2). For exact value, (5 pie/3) times (180/pie). Cross multiply. Hope that helps!

**Algebra**

How do you find the excluded value if there is another variable or number in the denominator? Such as the equation 12(a) over a squared minus 3(a) minus 10?

**chemisty**

how many joules of energy are needed to change 275 g of water from 15 degrees C to steam at 100 degrees C?

**Social Studies! CHECK!**

What do you think the answers are?

**chem**

How many grams of NH3 are present in 725 mL of gas at STP?

**Chemistry: Check my answers?**

12 : is false everything else looks great

**Education**

it does not give a exact answer, it's wording is unclear.

**Education**

well help me out hoe

**Education**

In a study about kindergarten readiness, which one of the following was true? A. Group participation skills were viewed as insignificant in comparison to academic skills. B. The ability to write one's name was followed by self-control. C. The majority of teachers placed ...

**education**

Teachers usually ask more of this type of question even if it is NOT recommended: convergent. B. divergent. C. open-ended. D. recall.

**ece**

I think C

**ECE**

Would it be D?

**Early Childhood**

Agreed

**Chemistry**

2 NO(g) + O2 (g) <==> 2 NO2 (g) Given that Kp=7.96×1012 for the reaction above and the following starting conditions: Initial Concentrations p(NO)=0.775 atm p(NO2)=0.000 atm p(O2)=0.789 atm Determine the equilibrium concentration of NO2.

**math algebra**

I have a really hard problem and I need help answering it. Two trains are traveling opposite directions. One train is traveling at the speed of 90 mph. The second train is traveling at a speed of 95 mph. The two trains travel for 3 hours. How far apart are the two trains?

**math algebra**

The answer is 2.4 hours

**math**

coach kent brings 3 qt of sport drink to soccer practice each player gets the same amount of drink how many oz of the drink does each player get?

**Physics**

Calculate the percentage of Earth’s gravitational force on the ISS astronauts while orbiting at an altitude of 248 miles above Earth’s surface. To do this, compare the gravitational force on an orbiting astronaut to the force on the astronaut here at Earth’s ...

**English 12**

Explain how a word can be a morphemic noun and a syntactic adverb in the same sentence.

**physics**

A 17 kg child descends a slide 3.5 m high and reaches the bottom with a speed of 4.5 m/s. How much work was done by friction as the child goes down the slide?

**physics**

A 17 kg child descends a slide 3.5 m high and reaches the bottom with a speed of 4.5 m/s. How much work was done by friction as the child goes down the slide?

**physics**

A 17 kg child descends a slide 3.5 m high and reaches the bottom with a speed of 4.5 m/s. How much work was done by friction as the child goes down the slide?

**statistic**

Neither! The response variable used to be called the depended variable. It's also plotted along the y-axis!

**EARTH SCIENCE**

I have taken the exam on penn foster and 125 gallons is not the right answer!

**Elementary Math**

All I did was 15.4 x .7 which equals 10.78

**Early Childhood Education**

lol ,dang she told you!

**Spanish 4**

help with worksheets

**math**

What number must be added to make a perfect square trinomial x^2+(8/5)x

**AP Chemistry**

If Q<K then the reaction will flow from reactants to products. If Q>K then the reaction will flow from the products to the reactants. In this case K=.278 and your Q=.226 so Q<K. The reaction will flow from reactants to products.

**College Algebra**

Pencils cost 20 cents and pens cost 50 cents. Mabel buys x pencils and y pens, spending $2.00. Write an equation in standard form with integer coefficients that relates x and y.

**College Algebra**

Write an equation for the amount of money, A, that we would have if we invested $25,000 at 6% per year for 5 years compounded instantaneously.

**College Algebra**

Write an equation for the amount of money, A, that we would have if we invested $2000 at 8% interest for 10 years compounded semiannually (twice each year)

**College Algebra**

Solve the System 2x-8y=20 3x-12y=30

**College Algebra**

A 50 gallon barrel plumb full of water springs a leak in the bottom and leaks at a constant rate of two gallons per minute. Write an equation that relates the amount of water left in the barrel, y in terms of how many minutes have passed since the leak began, x.

**College Algebra**

A company that bought a machine for $30,000 wants to depreciate its entire value equally over the next ten years. Write an equation that represents the machine's value, v, in terms of the number of years that have passed since the machines purchase, t.

**College Algebra**

Change the equation 5x+3y=60 to slope-intercept form.

**College Algebra**

Change the equation to slope-intercept form.

**College Algebra**

Mints cost 5 cents each and gumballs cost 3 cents each. Kathleen spent 60 cents buying x mints and y gumballs. Write an equation in stand form that represents all the different combinations of mints and gumballs that Kathleen might have purchased.

**algebra**

what is the cube root of -125x^6

**world history**

what did samuel kemper and the republican army accomplish?

**Chem 1**

Suppose 1.624g of salt FeSO4 is placed in a 250mL flask to which 50mL of water and 10 mL of 3M H2SO4 are added. How many mL of .1062 M KMnO4 solution are required to reach the endpoint?

**Chem 1**

What about the mL of water and H2SO4

**Chem 1**

Suppose 1.624g of salt FeSO4 is placed in a 250mL flask to which 50mL of water and 10 mL of 3M H2SO4 are added. How many mL of .1062 M KMnO4 solution are required to reach the endpoint?

**Science**

Oooh this helped me on mine.

**Math**

if kelly gave 1/3 of a pizza to holly and 1/5 to diana, how much did she have left?

**haley**

I don't know

**math**

write a numerical expression to represent the phrase Half a number increased by 34

**math**

a carload of fraternity brothers leave their house for a long weekend trip. three hours later a second carload of brothers leaves the same house and travels the same path. if the second care drives and average of 15 mph faster than the first, what is the average speed of eavh ...

**math**

jim has a box in the shape of a rectangular prism. The area of the base of the box is 48 square inches. The volume of the box is 144 cubic inches. Let h = the height of Jim's box. Write and solve an equation you can use to find the height of Jim's box.

**algebra**

A person invested 20,000$ in stocks and bonds. Her investment in bonds is 5,000$ more than half her investment in stocks. How much did she invest in stocks? how much did she invest in bonds?

**Early childhood**

Thank you!

**English**

What is the physical journey like in the novel "Murder on the Orient Express" and how does it add to the meaning?

**trig**

Find all solutions of the equation. Leave answers in trigonometric form. x^5-1024=0 I got 4(cos tehta + i sin tehta), tehta = 0, 2pi/5, 4pi/5, 6pi/5, 8pi/5 is this right

**hazard bctcs**

one aspect of the beauty of scenic landscape is its variability. The elevations (feet above sea level) of 12 randomly selected towns in the Finger Lakes Regions of Upstate New York are recorded here. 1117, 1360, 1009, 766, 1333, 1306, 577, 1144, 874, 658, 1306, 712. Find the ...

**hazard bctcs**

one aspect of the beauty of scenic landscape is its variability. The elevations (feet above sea level) of 12 randomly selected towns in the Finger Lakes Regions of Upstate New York are recorded here. 1117, 1360, 1009, 766, 1333, 1306, 577, 1144, 874, 658, 1306, 712. Find the ...

**hazard bctcs**

You are responsible for planning the parking needed for a new 256 unit apartment complex, and you're told to base the needs on the statistic "average number of vehicles per household is 1.3" If the owner wants parking that will accommodate 73% of all the tenants ...

**hazard bctcs**

According to Chebychev's theorem, what percentage of a distribution will be within k = 3.7 standard deviations of the mean? (Give your answer correct to one decimal place.)

**World Geography**

Honestly you guys really need to chill out!! It's not that big a deal, you don't have to flip out on him!! You could nicely say," Hey I don't think you should be asking for direct answers, but I can give you help". Now idk about you but I don't think ...

**Chemistry**

So would 248 ml be correct

**Chemistry**

The volume of a mass of gas is 300 ml at 25°C and 685 torr. What will the gas occupy at STP? Will the temperatures be the same when I do (P1V1/T1) = (P2V2/T2) ?

**chemistry**

if 500 g of mgcl2 are produced in the above reaction how many l of h2 are produced

**math**

melinda charges $4 per hour for babysitting. Mrs Garden does not want to spend more than $25 for babysitting. what is the maximum number of hours that she can have melinda babysit. the answer is $24. solve the inequality

**math**

how munch sand in cubic feet for a sandbox 6 inches high 3 feet wide 3 feet long

**US History**

thank you

**US History**

He thinks the first on is It required all Americans to return runaway slaves to their owners, and free states opposed this law then the next one Slavery was increasing in the southern states, but northern states wanted to end slavery hes not sure and i don't want him ...

**US History**

Why was the Fugitive Slave Act so controversial? (3 points) It required all Americans to return runaway slaves to their owners, and free states opposed this law. It required all runaway slaves to be hung, and most people in free and slaveholder states were against this form ...

**US History**

Use this case study for the following question. Case Study: Rattle Snake Springs National Park Service Rattlesnake Springs was one of the stockade camps where Cherokees were initially collected after being forced off their land. It is located in the far southeastern corner of ...

**US History**

Sorry, theres another one my son is stuck on.

**US History**

Thank you

**US History**

Can somebody help with my son's study guide? Thank you! What did the Supreme Court cases and the ultimate outcome for the Cherokee suggest about future dealings between the United States government and Native Americans? (3 points) The U.S. government would most likely ...

**chemistry**

567

**Physics**

276.3

**math**

well that aint right so..

**math**

idk

**Alagbra 2**

what is .5 cubed?

**algebra**

One more than the product of 13 and Jenny's savings

**Geometry**

URGENT PLEASE HELP please help me understand how to draw a net, am i supposed to memorize these or is there a method for drawing nets for different shapes.

**English**

I have to write a 1 paragraph summary on how Alfred the Great defines, and explains irony, and how is Alfred the Great an example of irony

**English**

Good

**english**

sentence labeling

**Interpersonal Communications**

Imagine that you are hosting a group of exchange students next term. You are responsible for welcoming the students to campus and acquainting the students with life on campus socially as well as academically. Develop a “Welcome Letter” for the visiting students. Keep...

**7th grade science help**

25 genotypes and 25 phenotypes

**math**

The lenght of each of the two sides of an isisceles triangle is 10 meters. The angle between the two congruent sides is x. find the area of the triangle as a function of x/2.

**math**

The lenght of each of the two sides of an isisceles triangle is 10 meters. The angle between the two congruent sides is x. find the area of the triangle as a function of x/2.

**math**

476+ 254=

**pre-calc help !!!!!!!**

if someone could show me how to solve this problem 1) cos(345°)

**pre-calc help !!!!!!!**

#1 cos x+sec x=2 #2 (1+tan x)^2= 2 tan x+2 #3 cos^2x-sin^2 x+1=cos x please show all work & thanks

**pre-calc help !!!!!!!**

cos^2x-sin^2 x+1=cos x

**pre-calc**

(1+tan x)^2= 2 tan x+2 please show all work

**pre-calc**

cos x+sec x=2 if you could please show all work

**chemistry**

the average mass of a kernel of popcorn is 0.15g? what would be the mass of one mole of kernels ?

**Algebra 2**

I've had a major brain fart..How do you get the inverse function of: f(x)= (2x-3)/(x+1) i know the answer but i don't know how to get there. Please help, thanks.

**pre-calc help !!!!!!!**

1)tan^2x=3 ? 2)tan x sin^2x=tan x ? 3)2cosx sinx - cos x=0

**pre-calc**

two observers 3 miles apart and facing each other find that the angles of the elevation of a balloon in the same vertical plane with themselves are 28degree and 31 degree respectively.find the distance from the balloon to the observer located at the 31 angle?

**pre-calc**

a lifeguard sits on the lifeguard stand that is about eight feet high.he suddenly notices that a swimmer is struggling in the water.the angle between the base of the lifeguard stand and the swimmer is about 102 degree,and the straight line distance between the base of the ...

**pre-calc**

two lighthouses A and B are positioned along the coast.A ship is positioned 30 miles from lighthouse A and 40 miles from lighthouse B.The angle between the line of sight from the ship to lighthouse A and the line of sight to lighthouse B is 33 degree. what is the distance ...

**Psychology**

Your body's reaction to the stress you have been under for the past two weeks is that you have become more tired and now have a sore throat. What is this called? Object–relations theory Opponent–process theory Two–factory theory Type B behavior pattern ...

**Psychology**

What kind of memory is involved in remembering how to tie shoes? Semantic Episodic Procedural Priming Prospective

**Psychology**

Your body's reaction to the stress you have been under for the past two weeks is that you have become more tired and now have a sore throat. What is this called? Object–relations theory Opponent–process theory Two–factory theory Type B behavior pattern ...

**Math**

Seven in the thousands place is ten times greater than seven in the hundreds